the second bit is more formal, " You're six years old, aren't you?"
because, the other sounds very demanding or imperative, like as if you have to answer the question. so, it has to be the second line.
This is an opinionated question but I personally get stressed at baseball games because of the noise and the cramped space. And the threat of having a baseball thrown at your head.
A source that consists of original material, such as an interview
